Calculate A+B-C+D
[6410] Calculate A+B-C+D - Look at the series (7, 16, 43, B, A, 1096, 3283, 9844, 29527, C, 265723, D, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A+B-C+D! - #brainteasers #math - Correct Answers: 19 - The first user who solved this task is Nasrin 24 T
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Calculate A+B-C+D

Look at the series (7, 16, 43, B, A, 1096, 3283, 9844, 29527, C, 265723, D, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A+B-C+D!
Correct answers: 19
The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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Helping your father

A clergyman walking down a country lane and sees a young farmer struggling to load hay back onto a cart after it had fallen off.
"You look hot, my son," said the cleric. "why don't you rest a moment, and I'll give you a hand."
"No thanks," said the young man.
"My father wouldn't like it."
"Don't be silly," the minister said.
"Everyone is entitled to a break. Come and have a drink of water."
Again the young man protested that his father would be upset. Losing his patience, the clergyman said, "Your father must be a real slave driver. Tell me where I can find him and I'll give him a piece of my mind!"
"Well," replied the young farmer, "he's under the load of hay."

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Gustav Waldemar Elmen

Born 22 Dec 1876; died 10 Dec 1957 at age 80.Swedish-American electrical engineer and metallurgist who created Permalloy (1916) and related alloys with high magnetic permeability used in communications equipment. An alloy with this property can be easily magnetized and demagnetized, especially useful for applications in electrical equipment, telephones and other communications systems. He developed the nickel-iron Permalloy in 1916, for Western Electric Company (later Bell Telephone Laboratories). Later, in 1923, Elmen found that magnetic permeability could be dramatically enhanced if Permalloy was heat treated. Its magnetic permeability exceeded that of silicon steel. His discovery made possible deep-sea telegraph cables of large message- carrying capacity.«
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